https://marco.org/2007/11/12/i-dont-really-care-about-the-numbers-that-much-i
I don’t really care about the numbers that much. I like Mac OS X, and I do Mac software because I enjoy it tremendously. I work very hard because I like the work. Were I doing Windows software, I wouldn’t like the work, so I wouldn’t work hard, so I’d probably never ship any software at all.